He was reading a book in his room all day.

Ryuichiro is my best friend.

The strong sense of impatience I feel waiting for his return is painful.

He feels it takes time to acquire new skills, but Rome wasn't built in a day.

We will exhibit at a large trade fair next week.

This reservoir is an important water source for the local people.

His arrow hit the center of the target.

His arrow made a direct hit in the center of the target.

This is a once-in-a-lifetime opportunity.

He told me the whole story of the incident.